Rail-crossing.



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FRIEDRICH AUGUST LEHMANN, OF BERLIN, GERMANY.

RAIL-CROSSING.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed November 10, 1903. Renewed J'anuary 27, 1906. SerialNo. 298,232.

T aZZ whom it may concern:

Be it known that I, FRIEDRICH AUGUST LEHMANN, proprietor, residing at 56Baerwaldstrasse, Berlin, S., in the Kingdom of Prussia, Gernan Empire,have invented certain new and useful Improvements in Rail Crossings, ofwhich the following is a specification.

The subject of the present invention is an improved construction for thecrossings of street-car lines; and it consists more particularly ininserting suitable plates or bars in slots made in the trough of therails and se curing them therein.

In the accompanying drawings, Figure 1 shows a vertical cross-sectionthrough a fastening or bolting point. Fig. 2 is a vertical section online 2 2 of Fig. 1. Fig. 3 isa section similar to Fig. 2 With thefastening-bolts fiattened. Fig. 4 is a view of the same section where ahexagonal bolt is used.

The effect of inserting the plates in the troughs of the crossing-railsis that at this point the car runs on the fianges of the wheelrim. Acrossing may, for instance, be laid out and constructed as follows: Thelines Which run unbroken are laid across sleepers a, while the crossinginterrupted line lies along these sleepers. It is in the lastnamed railsthat the longer uninterrupted plates or bars are inserted, while theshorter plates are inserted in the uninterrupted rails. The insertedplates are secured in place by means of the bolts 29, which are suitablytapered.

The holes in the rails through which the bolts pass, as well as those inthe inserted plates, are larger in diameter than the bolts used tosecure them. Moreover, the slots made in the rails, as well as theplates inserted in them, are made slightly wedge-shaped, so that thebolts driven in from the side Will tend to cause the inserted plates topress tightly against the rails.

Where the rails do not cross at right angles and where a bolt cannot bedriven in from the side of the acute angle, the bolts are introducedfrom the obtuse-angle side and When it is desired to change the platesare driven through to the acute-angle side.

In order to prevent shook when the wheelri1n flange reaches and leavesthe plate, the latter is sloped down at the ends to the level of thetrough of the rail, and care is taken that both Wheels of the carcommence to run onto the plate simultaneously. All the plates are set atexactly the same level, so that their surface forms the crossing into aperfectly level one.

When the inserted plates are worn out, they can be quickly taken out andreplaced by new ones.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is An improved crossing for the rails of streetcars havingthe usual intersecting rails pro vided in known manner with a slot inthe troughbottom for the reception of a filling piece of metal for thefiange of the Wheel to bear on, comprising in combination horizontalbolts projecting through both Walls of the trough as well as the saidfilling-piece, and horizontal borings within the latter arranged for asmall space higher th an the correspond ing horizontal borings withinthe walls of the trough, substantially as described and shown and forthe purpose set forth.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

HENRY IIASPER, WOLDEMAR HAUPT.

